body {
  padding: 0;
  margin: 0;
  font: 13px "华文楷体", "Lucida Grande", Helvetica, Arial, sans-serif;
}
#add{
  width: 50%;
  margin: 0 auto;
}
#add p{
  padding: 0;
  margin: 10px 0 2px 0;
}
#add input,select{
  font-size: 12px;
  width: 100%;
  height: 20px;
  box-sizing: border-box;
}
#add>form>input:last-child{
  height: 25px;
  padding: 0;
  margin: 0;
  background-color: #00B7FF;
  font-size: 13px;
  border: 1px gray solid;
  transition: all linear 0.2s;
}
#add>form>input:last-child:hover{
  transform: scale(1.01);
  background-color: black;
  color: #00B7FF;
}

